Permanent sealing
(a) Class 100D, 1650mm nominal diameter concrete interlocking pipes (SANS 677) for jacking at N14 road crossing
(b) Class 100D, 1650mm nominal diameter concrete interlocking pipes (SANS 677) for jacking at CH1800 (Railway crossing)
"(c) Class 100D, 1500mm nominal diameter concrete interlocking pipes (SANS 677)
for jacking at CH4750 (Conveyor crossing)"
H 27 450